/*
 * Copyright 2000-2015 JetBrains s.r.o.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.intellij.psi.impl;

import com.intellij.psi.PsiElement;
import com.intellij.psi.PsiFile;
import com.intellij.psi.PsiManager;
import com.intellij.psi.PsiTreeChangeEvent;
import org.jetbrains.annotations.NotNull;

public class PsiTreeChangeEventImpl extends PsiTreeChangeEvent {
    private boolean isGenericChange;

    public enum PsiEventType {
        BEFORE_CHILD_ADDITION,
        CHILD_ADDED,
        BEFORE_CHILD_REMOVAL,
        CHILD_REMOVED,
        BEFORE_CHILD_REPLACEMENT,
        CHILD_REPLACED,
        BEFORE_CHILD_MOVEMENT,
        CHILD_MOVED,
        BEFORE_CHILDREN_CHANGE,
        CHILDREN_CHANGED,
        BEFORE_PROPERTY_CHANGE,
        PROPERTY_CHANGED
    }

    private PsiEventType myCode;

    public PsiTreeChangeEventImpl(@NotNull PsiManager manager) {
        super(manager);
    }

    public PsiEventType getCode() {
        return myCode;
    }

    public void setCode(@NotNull PsiEventType code) {
        myCode = code;
    }

    public void setParent(PsiElement parent) {
        myParent = parent;
    }

    public void setOldParent(PsiElement oldParent) {
        myOldParent = oldParent;
    }

    public void setNewParent(PsiElement newParent) {
        myNewParent = newParent;
    }

    public void setChild(PsiElement child) {
        myChild = child;
    }

    public void setOldChild(PsiElement oldChild) {
        myOldChild = oldChild;
    }

    public void setNewChild(PsiElement newChild) {
        myNewChild = newChild;
    }

    public void setElement(PsiElement element) {
        myElement = element;
    }

    public void setPropertyName(@NotNull String propertyName) {
        myPropertyName = propertyName;
    }

    public void setOldValue(Object oldValue) {
        myOldValue = oldValue;
    }

    public void setNewValue(Object newValue) {
        myNewValue = newValue;
    }

    public void setFile(PsiFile file) {
        myFile = file;
    }

    public void setOffset(int offset) {
        myOffset = offset;
    }

    public int getOffset() {
        return myOffset;
    }

    public void setOldLength(int oldLength) {
        myOldLength = oldLength;
    }

    public int getOldLength() {
        return myOldLength;
    }

    // this is a generic event which is send after all events for concrete PSI changes in a file (e.g. childAdded(), childReplaced() etc).
    // this event means "something changed in the file", not the "this PSI element changed in the file"
    public boolean isGenericChange() {
        return isGenericChange;
    }

    public void setGenericChange(boolean genericChange) {
        isGenericChange = genericChange;
    }

    @NotNull
    @Override
    public String toString() {
        return "PsiTreeChangeEventImpl{" + myCode
                + (isGenericChange ? " (generic)" : "")
                + (myPropertyName == null ? "" : " (" + myPropertyName + ")")
                + (myFile == null ? "" : " in file " + myFile.getName())
                + '}';
    }
}
